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| From | Reinhard Zwirner <reinhard.zwirner@t-online.de> |
|---|---|
| Newsgroups | sci.electronics.components |
| Subject | Re: Question regarding the identification of a component |
| Date | 2025-09-09 22:08 +0200 |
| Message-ID | <mibfq9F6e7mU1@mid.individual.net> (permalink) |
| References | <mialetF24nnU1@mid.individual.net> <109pj1j$2frf$1@nnrp.usenet.blueworldhosting.com> |
Edward Rawde schrieb: > "Reinhard Zwirner" <reinhard.zwirner@t-online.de> wrote in message news:mialetF24nnU1@mid.individual.net... >> Attention: fup2! >> >> Hello, >> >> In an older power supply unit for GM counter tubes, the high voltage >> (max. 1 kV) is generated by a normal push-pull voltage converter >> (switching frequency approx. 8 kHz). In the HV filter chain, this >> >> <https://s1.directupload.eu/images/250908/bsg2w6z7.jpg> >> >> capacitor is connected in parallel with the following strangely >> marked component of the same size, >> >> <https://s1.directupload.eu/images/250908/62iwvu9p.jpg> >> >> which my Far Eastern multitester identifies as an 8 nF capacitor. >> That could well be the case, but why the strange marking? A VDR? What >> do you think? > > The marking suggests that like the other capacitor it's a Sprague component. > You are probably aware that Sprague was known for capacitors, but that > doesn't prove it isn't a thermistor or surge protection component of some kind. > Image search finds nothing with similar markings. > Try applying some volts and see if you get any amps. Tested the part with a 2 megohm series resistor at 3 kV (with a capacitive voltmeter in parallel): no problem. > Does the converter work without it? Yes. > What was the reason for disconnecting it? To take the best possible photo. > How many of these components are there and what are they connected to? Just this one. One side connected to ground, the other side is connected to the HV line (in parallel with the 10 nF capacitor). Regards Reinhard
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Question regarding the identification of a component Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2025-09-09 14:38 +0200
Re: Question regarding the identification of a component "Edward Rawde" <invalid@invalid.invalid> - 2025-09-09 12:01 -0400
Re: Question regarding the identification of a component Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2025-09-09 22:08 +0200
Re: Question regarding the identification of a component Klaus Kragelund <klauskvik@hotmail.com> - 2025-09-09 18:19 +0200
Re: Question regarding the identification of a component Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2025-09-09 22:15 +0200
Re: Question regarding the identification of a component Klaus Kragelund <klauskvik@hotmail.com> - 2025-09-09 18:24 +0200
Re: Question regarding the identification of a component Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2025-09-09 22:17 +0200
Re: Question regarding the identification of a component bitrex <user@example.net> - 2025-09-09 12:19 -0400
Re: Question regarding the identification of a component Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2025-09-09 22:12 +0200
Re: Question regarding the identification of a component "chrisnd@privacy.net" <chrisnd@privacy.net> - 2025-09-10 11:17 +0100
Re: Question regarding the identification of a component Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2025-09-10 17:38 +0200
Re: Question regarding the identification of a component "chrisnd@privacy.net" <chrisnd@privacy.net> - 2025-09-10 16:43 +0100
Re: Question regarding the identification of a component Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2025-09-10 19:06 +0200
Re: Question regarding the identification of a component Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2025-09-09 17:00 +0000
Re: Question regarding the identification of a component John R Walliker <jrwalliker@gmail.com> - 2025-09-09 18:57 +0100
Re: Question regarding the identification of a component Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2025-09-09 21:56 +0200
Re: Question regarding the identification of a component legg <legg@nospam.magma.ca> - 2025-09-12 08:32 -0400
Re: Question regarding the identification of a component Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2025-09-13 22:13 +0200
Re: Question regarding the identification of a component legg <legg@nospam.magma.ca> - 2025-09-12 08:52 -0400
Re: Question regarding the identification of a component legg <legg@nospam.magma.ca> - 2025-09-12 09:09 -0400
Re: Question regarding the identification of a component legg <legg@nospam.magma.ca> - 2025-09-13 13:09 -0400
Re: Question regarding the identification of a component Theo <theom+news@chiark.greenend.org.uk> - 2026-03-01 18:17 +0000
Re: Question regarding the identification of a component Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2026-03-02 19:36 +0100
Re: Question regarding the identification of a component Theo <theom+news@chiark.greenend.org.uk> - 2026-03-04 13:04 +0000
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